GN: Add rtc_unittests

Everything except the dependency on
sdk/sdk_tests.gyp:rtc_sdk_peerconnection_objc_tests is included.
That one actually doesn't make those tests run as part of rtc_unittests
(by design). Fixing that + add them will done in aseparate CL.

BUG=webrtc:5949
TESTED=Built and ran rtc_unittests on Mac.
Verified the number of tests matched a run on the bot (1213 tests executed).

R=perkj@webrtc.org

Review URL: https://codereview.webrtc.org/2034923003 .

Cr-Commit-Position: refs/heads/master@{#13036}
diff --git a/webrtc/BUILD.gn b/webrtc/BUILD.gn
index cdaa78e..0c6db74 100644
--- a/webrtc/BUILD.gn
+++ b/webrtc/BUILD.gn
@@ -11,6 +11,7 @@
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("build/webrtc.gni")
+import("//testing/test.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 # Contains the defines and includes in common.gypi that are duplicated both as
@@ -377,3 +378,197 @@
     ]
   }
 }
+
+# There's no point processing WebRTC standalone tests in a Chromium build.
+if (!build_with_chromium) {
+  config("rtc_unittests_config") {
+    # GN orders flags on a target before flags from configs. The default config
+    # adds -Wall, and this flag have to be after -Wall -- so they need to
+    # come from a config and can"t be on the target directly.
+    if (is_clang) {
+      cflags = [
+        "-Wno-missing-braces",
+        "-Wno-sign-compare",
+        "-Wno-unused-const-variable",
+      ]
+    }
+  }
+
+  test("rtc_unittests") {
+    testonly = true
+    sources = [
+      "base/array_view_unittest.cc",
+      "base/atomicops_unittest.cc",
+      "base/autodetectproxy_unittest.cc",
+      "base/bandwidthsmoother_unittest.cc",
+      "base/base64_unittest.cc",
+      "base/basictypes_unittest.cc",
+      "base/bind_unittest.cc",
+      "base/bitbuffer_unittest.cc",
+      "base/buffer_unittest.cc",
+      "base/bufferqueue_unittest.cc",
+      "base/bytebuffer_unittest.cc",
+      "base/byteorder_unittest.cc",
+      "base/callback_unittest.cc",
+      "base/copyonwritebuffer_unittest.cc",
+      "base/crc32_unittest.cc",
+      "base/criticalsection_unittest.cc",
+      "base/event_tracer_unittest.cc",
+      "base/event_unittest.cc",
+      "base/exp_filter_unittest.cc",
+      "base/fakeclock.cc",
+      "base/fakeclock.h",
+      "base/filerotatingstream_unittest.cc",
+      "base/fileutils_unittest.cc",
+      "base/helpers_unittest.cc",
+      "base/httpbase_unittest.cc",
+      "base/httpcommon_unittest.cc",
+      "base/httpserver_unittest.cc",
+      "base/ipaddress_unittest.cc",
+      "base/logging_unittest.cc",
+      "base/md5digest_unittest.cc",
+      "base/messagedigest_unittest.cc",
+      "base/messagequeue_unittest.cc",
+      "base/mod_ops_unittest.cc",
+      "base/multipart_unittest.cc",
+      "base/nat_unittest.cc",
+      "base/network_unittest.cc",
+      "base/onetimeevent_unittest.cc",
+      "base/optional_unittest.cc",
+      "base/optionsfile_unittest.cc",
+      "base/pathutils_unittest.cc",
+      "base/platform_thread_unittest.cc",
+      "base/profiler_unittest.cc",
+      "base/proxy_unittest.cc",
+      "base/proxydetect_unittest.cc",
+      "base/random_unittest.cc",
+      "base/rate_statistics_unittest.cc",
+      "base/ratelimiter_unittest.cc",
+      "base/ratetracker_unittest.cc",
+      "base/referencecountedsingletonfactory_unittest.cc",
+      "base/rollingaccumulator_unittest.cc",
+      "base/rtccertificate_unittest.cc",
+      "base/rtccertificategenerator_unittest.cc",
+      "base/scopedptrcollection_unittest.cc",
+      "base/sha1digest_unittest.cc",
+      "base/sharedexclusivelock_unittest.cc",
+      "base/signalthread_unittest.cc",
+      "base/sigslot_unittest.cc",
+      "base/sigslottester.h",
+      "base/sigslottester.h.pump",
+      "base/stream_unittest.cc",
+      "base/stringencode_unittest.cc",
+      "base/stringutils_unittest.cc",
+      "base/swap_queue_unittest.cc",
+
+      # TODO(ronghuawu): Reenable this test.
+      # "systeminfo_unittest.cc",
+      "base/task_queue_unittest.cc",
+      "base/task_unittest.cc",
+      "base/testclient_unittest.cc",
+      "base/thread_checker_unittest.cc",
+      "base/thread_unittest.cc",
+      "base/timedelta.h",
+      "base/timeutils_unittest.cc",
+      "base/urlencode_unittest.cc",
+      "base/versionparsing_unittest.cc",
+
+      # TODO(ronghuawu): Reenable this test.
+      # "windowpicker_unittest.cc",
+      "p2p/base/dtlstransportchannel_unittest.cc",
+      "p2p/base/fakeportallocator.h",
+      "p2p/base/faketransportcontroller.h",
+      "p2p/base/p2ptransportchannel_unittest.cc",
+      "p2p/base/port_unittest.cc",
+      "p2p/base/portallocator_unittest.cc",
+      "p2p/base/pseudotcp_unittest.cc",
+      "p2p/base/relayport_unittest.cc",
+      "p2p/base/relayserver_unittest.cc",
+      "p2p/base/stun_unittest.cc",
+      "p2p/base/stunport_unittest.cc",
+      "p2p/base/stunrequest_unittest.cc",
+      "p2p/base/stunserver_unittest.cc",
+      "p2p/base/tcpport_unittest.cc",
+      "p2p/base/testrelayserver.h",
+      "p2p/base/teststunserver.h",
+      "p2p/base/testturnserver.h",
+      "p2p/base/transport_unittest.cc",
+      "p2p/base/transportcontroller_unittest.cc",
+      "p2p/base/transportdescriptionfactory_unittest.cc",
+      "p2p/base/turnport_unittest.cc",
+      "p2p/client/basicportallocator_unittest.cc",
+      "p2p/stunprober/stunprober_unittest.cc",
+    ]
+
+    if (is_linux) {
+      sources += [
+        "base/latebindingsymboltable_unittest.cc",
+
+        # TODO(ronghuawu): Reenable this test.
+        # "linux_unittest.cc",
+        "base/linuxfdwalk_unittest.cc",
+      ]
+    }
+
+    if (is_win) {
+      sources += [
+        "base/win32_unittest.cc",
+        "base/win32regkey_unittest.cc",
+        "base/win32window_unittest.cc",
+        "base/win32windowpicker_unittest.cc",
+        "base/winfirewall_unittest.cc",
+      ]
+    }
+
+    if (is_mac) {
+      sources += [ "base/macutils_unittest.cc" ]
+    }
+
+    if (is_posix) {
+      sources += [
+        "base/ssladapter_unittest.cc",
+        "base/sslidentity_unittest.cc",
+        "base/sslstreamadapter_unittest.cc",
+      ]
+    }
+    if (is_ios || (is_mac && target_cpu != "x86")) {
+      defines = [ "CARBON_DEPRECATED=YES" ]
+    }
+
+    if (rtc_use_quic) {
+      sources += [
+        "p2p/quic/quicconnectionhelper_unittest.cc",
+        "p2p/quic/quicsession_unittest.cc",
+        "p2p/quic/quictransport_unittest.cc",
+        "p2p/quic/quictransportchannel_unittest.cc",
+        "p2p/quic/reliablequicstream_unittest.cc",
+      ]
+    }
+
+    configs += [
+      ":common_config",
+      ":rtc_unittests_config",
+    ]
+    public_configs = [ ":common_inherited_config" ]
+
+    if (is_clang) {
+      # Suppress warnings from the Chromium Clang plugin.
+      # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
+      configs -= [ "//build/config/clang:find_bad_constructs" ]
+    }
+
+    deps = [
+      "base:rtc_base",
+      "base:rtc_base_test_utils",
+      "base:rtc_task_queue",
+      "p2p:libstunprober",
+      "p2p:rtc_p2p",
+      "//testing/gmock",
+      "//testing/gtest",
+    ]
+
+    if (is_android) {
+      deps += [ "//testing/android/native_test:native_test_support" ]
+    }
+  }
+}